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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N W,get Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> i <br /> Enviros Client Prol ID Shell 1267 Country Club, Stck Sampled 04/04/97 <br /> 270 Perkins Ave Sample Descript SB-5-31 Received 04/08/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 04/11/97 <br /> Analysis Method 8015Mod/8020 Analyzed 04/12/97 <br /> Attention Joe Neely Lab Number 9704512-08 Reported 04j22197 <br />)C Batch Number GC041197BTEXEXA <br /> nstrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 100 890 <br /> Methyl t-Butyl Ether 25 41 <br /> Benzene 050 N D <br /> Toluene - 050 - 3 2 <br /> Ethyl Benzene 050 .. 8 6 <br /> Xylenes (Total) 050 44 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 214 Q <br /> 4-Bro m ofl uoro benzene 60 140 -Q <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Amk <br /> Gregory <br /> Project Manager Page 1s <br />